Connection device



Nov. 13, 1928.

H. B. JONES CONNECTION DEVICE Filed May 15, 1925 unnel) re s PATENT Y OFF Patented Nov. l3, ;19 28 HOWARD a. JONES, or vAnsroN, ILLINOIS.

commmn DEVICE.

Application aied ma 15, 1925.

These improvements relate to devices for making a plurality of electrical connections. Iii-oneaspect the improvements relateto the unit including a section of cable, and in another aspect to the terminal device atone end of the cable. 1

' The impmvements have been devised particularly as an adjunct to radio receiving sets, and the prime object is to provide a simple and cheap form of connection device whereby the usualbattery wires may be led to theset and connections made therefrom to the instruments within the set in a simple, eafyand convcnientmanner, with features of identification of the wires substantially insuring proper connectionsin the beginning aml fr'om time to time as parts army be disassembled, and to provide substantially the minimum of space and one I susceptible of being connectedup with substantially .the minimum of labor and i'n'ental eii'ort.-

In the drawingsF-igure 1 is asectional View s I the terminal device on a scale about twicethe size I employ in practice; Fig. 2 is a bottom plan of the terminal device of Fig. 1; Fig. tudinal'section through the structure of Figs. 1 and 2; Figs. .4, 5 and 6 aretop viewsof modified forms of the device; and Fig. 7 is a'smallperspective of the conncctiondevice unit as made and sold byme as an article of commereeu Referring to the preferredform of Figs. '1, 2' and 3,'the body IO'in'my practice is of molded rubber compound vulcanized hard of thepreferrcd form of and ordinarily known as hard rubber, In

, y practice itslength is about one and three eigl-iths inches. 'It ha's a flat bottom whereby'it may rest evenly upon the baseboard of e the setor the side or end wall of the cabinet hold this terminal but small space. This thereof. Screws 11 thmughfsuitable holes head 10 firmly in position.

y is pro- As shown .in'F igs. 2 and 3 the. bod

vided with a hollow interior 12 defined inv these figures by a circular wall 10 at the sides and by the top :wafI-l. 10"., and leading to the hollow interior 12 there "is a passageway 13 preferably onlyslightly the diameter of the cabie 16, and the body is thickness of the ythe device as a whole is mainand'low and adapted to occupy passageway .13 preterably extends through: a shank-like extension 10,in my practice about half an inch cable where tai-ned sin all a device occupying 3 is a medial longirespectively in larger than Serial No. 30,456.

long, adapted to exert some holding effect upon the cable and relieve the individual wires within the hollow interior of strains which are incidental to moving the cable terminal head is rigidly of the bare wires the direction of the open bottom of the terminal head member 10.

In applying'the cable to the terminal head first remove the cable wrapping from a short section at its end and remove insulation from the individual Wires so as to leave about a half an in'chof the wires exposed. The ends of the five wires are then inserted respectivel in the five openings '14, whereupon a push upon the cable toward the hollow interior 12 forces the wires with the wires spread apart. 'Thereupon the cable is laid back into'the channel 13, the in dividual wires adjusted slightly if necessary, and then a suitable plastic material 15, such as what is known as sealing compound in electrical work, is poured into the hollow interior 12 and forced tightly among the wires therein and smoothed off even with the bot tom. -'Ihe;sealing compound on hardening not only forms agood insulation betweenthe wires but, in'iportantly, serves as ameans for securing the cable and the respective wires thereof in their desired'relative positions, and firmly secures the terminal head upon the cable. a In'Figs. 4, 5 and 6, I have shownthe device difi'erent shapes having certain advantages particular installations,-and in the bare wire ends f toj in- Figs. 4 and. 5

elusive and too inclusive issuefroniholes in the top wall of the terminal head and are bent over so as to lie upon and project beyond this terminal device. In Fig. 6 the. bare wires 9 to ,u inclusive, project through'hdles in the e llf f th manner illustrated in Figs. 1,2 and 3. Insome installations 1t l$ advantageous to havethe wires issue straight .ahead as in Fig. 5, while mothers a radial are only slig itly and theseholes 14 through the openings 14 arrangementas in'Figs. l and 4, 01' a lateral arrangement as in Fig. 6, will be preferred,

7U serted-and forced through these holes from y Lil depending upon the direction the connection wires shall take within the set.

In all of the forms shown identiiying means for the wire ends are illustrated small cupsh aped recesses 20, 21, 22, 23 and 2t, and these are colored, by means of paint applied thereto, in such a predetermined order as blue, green, yellow, red and pink. cording to a system of identification adopted by me and used extensively by various manufacturers of receiving sets at the present time, blue indicates plus B detector, green minus A, yellow minus B, red plus it, and pink plus ll amplifier.

Fig. 7 illustrates the connection unit complete, although shown broken as to its length. It consists of a length of cable 16 connected to the terminal head 10 as already described, the wires being from five to eight feet in length according to particular requirements, and the cable wrapping being removed from say a foot and a half to two feet of the wires at their free ends, and the extreme ends of the wires being freed from insulation for attachment to the battery terminals. Adjacent to the ends of these wires the insulation is painted at 25, 26, 27, 28 and 29 with the same colors respectively shown at 20 to 2st inclusive, namely: blue, green, yellow, red and pink, whereby the wire with the blue marking known to be the same as the one which issues adjacent to the blue marking on the terminal device, and so on with respect to all of the other colors. The result is that the person installing the device can connect the free ends of the wires with the several terminals of the batteries as called for by the system, and, having installed the head member 10 he can easily solder to the protruding wire ends a, b, 0, (Z and c (Fig. 2), or the other wire ends illustrated in Figs. l, 5 and 6, short lead wires making connection with the proper receiving set parts.

With such a unit the labor and head work of connecting the set with the batteries is very much simplified, and, when the installation is made, the fact that there is but a si ale cable 'issuing from the set and leading "to the batteries rather than a number of separate wires, likely to get mixed and tangled. is an advantage. The small and compact terminal ele ment to which the proper connections can readily be made, which occupies the minimum of space, and which is neat and attractive in appearance, and which the wires are well insulated and strr l old, provides a very desirable substitute 1 r the usual relatively long strip of insulating material containing numerous binding posts and occupying considerable space in ra o receiving sets. Since the batteries are c-zpiently in the cellar, the feature ofidentii ing both ends of the wires avoids all nee-es for l;- tempts to tracethe wires by means or currents or otherwise. H

subst anti lly I am aware that various kinds of terminal devices have heretofore been suggested to receive the end of a cable and to distribute wires therefron'i, but I am not aware that any such prior device is in so simple a form, consists of so few parts, and, withal, has such possibilities of advantageous use in a radio receiving set or in like situations as is the case with the present structure, and in this connection it is pointed out that my present device, in addi tion to its other advantages, is notably cheap in manufacture, is peculiarly strong, and is not likely to cause functional annoyance features of great importance in radio work.

I contemplate as being included in these in1- proveinents such changes, departures and modifications from what is specifically illustrated and described herein as fall within the scope of the appended claims.

I claim: 7 l. A multiple-wire cable unit of the chardescribed comprising a 1nultiple-wire cable anda small and compact terminal head of insulating material formed to seat sub stantially fiat and having an open bottom leading to a hollow 'nterior, the head having s igewayinto which the cable extends, ofthe head having openings spaced l u through which respectively the wires of "he cable extend, with means holding the and the head strongly together.

The combination of claim 1 hereof in which said hollow interior is filled with plassealing material holding the cable and i, oody together.

which said body has identifying means for the individual wires associated with said openings respectively and on the outside of the body.

The combination of claim 1. hereof in which said body is substantially small and is not much higher than the thickness of the cable to be used therewith and is formed as integral unit.

The combination of claim 1 hereof in waich the other end of the cablehas insulated wires thereof projecting therefrom free of cable wrappings to a materially great distance for connection to respective battery terminals spaced apart, said wires having identifying means thereon respectively, there being corresponding identifying means on the tern'iinal device and associated with the wires respectively issuing from the terminal device whereby each wire is correspondingly identified at each end portion thereof.

The combination of claim 1 hereof in which said ll d is shallow, narrow and short, with top and side walls, and of integral conuction, with sealing material in the hollow interior, ant. with said passageway for the cable in the formof a recess extending from the bottom toward the top wall.

' HOWARD B. J ONES.

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